All five actors have never appeared together at an official event for the series, Reuters reports.

Organizers are reportedly expecting 10,000-15,000 people from around the world to attend the convention, which runs from Oct. 19-21 at the Excel Exhibition Center. Tickets go on sale beginning April 30.

According to the convention's website, the weekend will also feature parties, a costume parade, photo and autograph sessions and Q&A panels. And it won't just be the captains in attendance - more guests are set to be announced.